Free tool
Assumption Mapper
Make the riskiest belief visible: place assumptions by importance and evidence, draft a test for the danger zone, then move the work into the Test Register → after reading about assumption-led discovery →
Importance × evidence map
Test firstMonitorParkIgnore
desirabilityviabilityfeasibilityusability
Assumption list
Test first · 1
New assumption
We believe New assumption. We will know we are wrong if…